ncp1578 ON Semiconductor, ncp1578 Datasheet - Page 7

• Manufacturer Part Number: ncp1578
• Description: Synchronous Step Down Controller With 50ma Linear Regulator
• Manufacturer: ON Semiconductor

FAULT DETECTION
LOGIC INPUT LEAKAGE
ELECTRICAL CHARACTERISTICS
(V
Overvoltage Trip Threshold
Undervoltage Trip Threshold
PGOOD Lower Threshold
PGOOD Pin ON Resistance
PGOOD Pin Leakage Current
Thermal Shutdown Trip Point
Thermal Shutdown Hysteresis
EN_LDO Threshold High
EN_LDO Threshold Low
EN_LDO Input Current
EN_SW Threshold High
EN_SW Threshold Low
EN_SW Input Current
FPWM Threshold High
FPWM Threshold Low
FPWM Input Current
FOFF Threshold High
FOFF Threshold Low
FOFF Input Current
3. Guaranteed by design, not tested in production.
BAT
= 12 V, LDO5 = V
Characteristic
CCP
= 5 V, T
A
= -40 to 85°C, for min/max values unless otherwise noted. Typical values are at T
PGOOD_LK
PGOOD_R
I
I
V
V
FPWM_H
INLDO_EN1
INLDO_EN2
V
FPWM_L
V
I
I
FOFF_H
FOFF_L
Symbol
I
INSW_EN
IN_FPWM
ENLDO_H
IN_FOFF
OVPth
T
ENLDO_L
UVPth
ENSW_H
VPG-
ENSW_L
SDHYS
T
SD
With Respect to FB Voltage
With Respect to FB Voltage
With Respect to FB Voltage
I_PGOOD = 5.0 mA
(Note 3)
(Note 3)
LDO ON
LDO OFF
EN_LDO = 5.0 V
EN_LDO = 24.0 V
SMPS ON
SMPS OFF
EN_SW = 5.0 V
Set as Force PWM Mode
Set as Power Saving Mode
FPWM = 5.0 V
Disable OCP, UVLO & OVP
OCP, UVLO & OVP are in function
FOFF = 5.0 V
(Internal Pull Down by 1 MW)
http://onsemi.com
NCP1578
7
Test Conditions
Min
-20
110
1.4
1.4
1.4
1.4
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
150
5.0
65
70
25
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
A
= 25_C.)
Max
120
-10
1.0
0.5
0.6
1.0
0.6
1.0
0.6
10
-
-
-
-
-
1
-
-
-
-
Unit
mA
mA
mA
mA
mA
mA
°C
°C
%
%
%
W
V
V
V
V
V
V
V
V